In our latest batch of casting news, there's some big developments for our favorite fantasy dramas: we know who will be voicing the Cheshire Cat on Once Upon a Time in Wonderland, while the original OUaT has found Ariel's prince. And Game of Thrones is recasting a role -- for the third time. Read on for all the details, including news for White Collar, Beauty and the Beast, Community, We Are Men, The Good Wife, CSI and Nashville.

Not all titles featured on BuddyTV are available through Amazon Prime.

Keith David is the Cheshire Cat on Wonderland: There are a few different CGI characters that require actors to provide the voice in the new spin-off. (John Lithgow as the White Rabbit, Roger Daltrey as the Caterpillar.) Now we know that voice (and on-screen) actor David is all set to voice the Cat starting in the premiere on October 10, according to TVLine. If you watched History's The Bible earlier this year, you may already recognize his voice -- he narrated the biblical miniseries.

Once Upon a Time finds Ariel's prince: Meanwhile, over at the flagship OUaT, TVLine reports that Gil McKinney has been cast in a multi-episode arc as Prince Eric, Ariel's love interest. He'll first appear in episode 6, titled "Ariel," which is also when the mermaid is introduced.

Game of Thrones recasts The Mountain yet again: Is the third time the charm? Following on the heels of Conan Stevens, who played the role in season 1, and Ian Whyte in season 2, Hafthor Julius Bjornsson will now step into the shoes of Gregor Clegane. He announced the news on Twitter: "For all my fans! I am happy to tell you that I will be THE MOUNTAIN In season 4 In Game Of Thrones." Clegane is expected to have a bigger presence in season 4.

Zelijko Ivanek and Rebecca Hazlewood to guest star on White Collar: Both will appear in episode 8 of season 5, with Ivanek as businessman Brett Forsythe who, TVLine notes, "specializes in hostile corporate takeovers" and apparently collects valuable natural history artifacts. Hazlewood, meanwhile, will play the curator at the natural history museum, Dr. Reva Khatri.

Annie Ilonzeh and Blair Redford to cause trouble on Beauty and the Beast: The Arrow alum will play Catherine's high school friend named Beth. As a journalist who witnesses an assault, she'll end up causing some issues for Catherine, according to TV Guide. And Redford has been cast as Zach, who Vincent knew from the Army and ends up being a threat. It's not known at this time when their respective episodes will air.

Walton Goggins brings the mystery to Community: The Justified star is set to guest star in season 5 as Mr. Stone, who shows up "with a dangerous accusation, a tantalizing offer and a devious plan that will change the [Greendale] group forever," as reported by TV Guide. He's not only mysterious, but emotionless as well.

Jane Leeves goes from Hot in Cleveland to We Are Men:According to TVLine, the actress, who's also well-known from her role on Frasier, will guest star in episode 6 of the new CBS comedy this fall as a hairstylist named Vanessa, who works at the salon that Frank (played by Tony Shalhoub) visits every week. And of course, comedy will ensue.

Jason O'Mara joins The Good Wife: The Vegas alum has been cast as an Irish attorney named Colin. He's been extremely successful in defending crime families and gang members over the course of the last 10 years, but now he wants to join Lockhart/Gardner. Deadline notes that if all goes smoothly, this may turn out to be a high-profile recurring part for the actor.

Jason Priestley is a casino mogul on CSI: The guest list keeps on growing for the crime drama's 300th episode, airing on October 23. Entertainment Weekly reports that Priestley's character has a past: a scandal ruined his reputation and he has pretty much gone into hiding -- until now.

Will Chase leaves Broadway for Nashville: The Tony nominee was all set to star in the musical Little Miss Sunshine at the Second Stage Theatre beginning on October 15. But he's departed from the show to star on Nashville as a possible love interest for Rayna. And according to Broadway.com, the character of Luke just so happens to be a big country music star. Let the sparks fly.

Want to add Once Upon a Time, Game of Thrones, Nashville and all your favorite shows to your very own watch-list? Download BuddyTV Guide for free for your phone.